Genie
Failed Motor Start Capacitor (AC Motor Models)
Opener hums but door does not move; motor sounds strained; may stop after a few seconds.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Open or weak start capacitor, Aged capacitor losing capacitance, Loose capacitor connections, Motor starting under heavy load from stiff door
How to Fix / Troubleshooting
Safety first: Unplug the opener. Capacitors can store energy; do not touch terminals with bare hands or tools. If unsure, call a professional.
Steps:
- Check door movement: Disconnect the door and ensure it moves freely by hand. Fix any binding before working on the opener.
- Locate capacitor: Remove the opener cover. The capacitor is usually a cylindrical component near the motor with two or more wires.
- Inspect visually: Look for bulging, cracks, or leakage. If any are present, replace the capacitor.
- Replace with correct part: Order the exact Genie motor start capacitor (matching microfarad and voltage rating). Transfer wires one at a time to the new capacitor.
- Test operation: Reassemble, restore power, and test. The motor should start smoothly without prolonged humming.
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Repair Difficulty
Medium
3/5
Required Part
Genie Motor Start Capacitor
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